Permutation lock



March 16 1926.

H. A. BURKHART PERMUTATION Loox 5 Sheets-Sheet y Filed Feb. 14

Unna-@Hoz 61m: ma

March 16 1926.

H. A. BURKHART I PERMUTATION LOCK Filed Femm, 1924 5 Sheets-Shed;

Ihm-anic@ Ma'rch 16' 1926.

H. A. BURKHART PERMUTATION Lock Filed Feb. 14 5 Sheets-Sheet 5 Magch 16 1926.' 1,577,246

H. A. BURKHART ERMUTATION Loox Filed Feb. 14I 1924 5 sheets-sheet 4 Y/I. A L

atto: n w114 Marh 16 5 Sheets-Sheet 5 Filed Feb. 14

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` n 'l y .3M-mmm 2-2 of Figure 1.

Patented Mar. 1e, 192e.

UNTED' STATES 1,577.24@ PATENT' orsi-er..

HENRY A. BUBKHART, orrITz'GERAInGoRGIA.,

-ERMUTATION LOCK.

, vAppiicaeon mea nehme-ry 14, 1924. semina. ceases.

To all iii/om t may concertar.

Be it known that I, HENRY A. BURKHAiiT, a citizen of the United States,v residing at Fitzgerald, in the county'of yBen Hill and State of'Georgia, have invented a new and useful Permutation Lock, of vwhich'the `following' is a specication.`V

The present invention relates to locks and more particularly to locks of the permutation type. Y

The priniaryobject oftheinvention is to provide novel means to insure an accurate and precise movement'ot the dgsthat cooperate with the tumblersol the lckzso that a line adjustment of the locking vdogswitli respect to the tumblers, may be made.

'proceedathe invention resides in the combination and arrangement. of partsand in the details ot construction hereinafter described and claimed, it being understood that changes in the precise embodiment of theV invention herein disclosed, may be inade within the scope of what is claimed, without departing from the spirit of the invention.

Referring tothe drawings: p Figure 1 is an endelevational viewot' a lock constructedin accordance with the inh vention. K Y

Figure 2 is a sectionall view taken on line Figure 3 is a sectional view taken lon line of Figure 1.

Figure fl is a sectional view taken 011 line of Figure 2.

*isere qS 'a fleemetalirlan 'disclenahe-O the. dea .epereta krebs.; i. Figure is e ,Side elevetnelivev @t en@ of'-the dog operating knobs. a v.portion of the frame being shown Aiii section.; y'

Figure 7 1S an .SevenOne-1 ver .jv-.1th, .911eof thefiplates of the frame beirigrernoveil.`

riguar es .an armada-i view @1a-ei esta constructed to more the'knob locking ihger in its inactive posi- Figure 9 is a sectional view taken on line V9--9 of Figure 5.

Figure 10 is a plan view, the two upper pla-,tes of the lock ca'singfbeing removed` to illustrate the manner of the lock. l

Figure 11 is a bottom plan view of 011e 01': the tumbler disks.

of 'setting the dials 12 is a side elevational view of one i the stationary tuinblers. e

vFidu're lfis a side elevational view of one ofthe movable tun'iblers.V l

Figure 14 isa frag-mental detail viewdisclosinga adog supporting plate and dog carried thereby.

Figure 15 is a perspective view of one ot the dog 'locking arms. n

.L Figure 16 is a fragmental sectional view disclosing the moifable'c'arriage supports. l Figure 17 is a fragmental detail oi the tumbler carriage. Y

Referring to the drawings indetail. the reterence character 5' designates the base plate of the lock, while the plate indicatedv at 6, and which is secured to the base plate 5 as by means of the 'posts 7, provides the upper plate of the lock. Supported between the platesv fand 6, are a plurality of. arms V8 which rhave right angled lowerextremities 9 apertured to accommodate screws 1() thath have their threaded extremities disposed in suitable openings in the plate 5 to secure them in position.

The upper ends of the arms 8 have connection with the frame 11 as through the screws 12, which frame 11 provides a support for the Amovable dogs 13 to be herein after more ,fully described and which are transversely ot the frame n p Supportedbetween the arms 8 are the bracket members 1d Vformed with grooves 'to accommodate the side bars of the locking carriage'lf?. Supported directly under the tumbler locking vcarriage is autumrriage indicated lat W18, which carriages?? land, 1.8 may move with respect weer other. Married redefine yit 'mail @movable frame 21 desigijied te any the-rivetedda1k1ne-arms 2211er mated arid-. .iiieiinted "se that the! an attrae erga-mad n me p over the hogere rfhieh plates support the dogs 'lil in a manner to perniit the eamo to nieve transversely ot the f'aine in which theyY are supported to tiring' the dogs into regietry with predetermined tnnihlere.

lilaeh olli these doe' looking arnie ineledee a rearwardly xttenoed linger E22 which ie engaged hy a coiled Springl QS carried hy the 'traine 2l on Whieh the piroted dog locking` arios are n'ionnted :io that the dog; locking;A arnns 'will he normali)v tilted tot Wordly into enneigement with the teeth of the inenihers It.

Foriniriiiv a part ol the carriage iS are the npwardli' extended armi; QG formed 'with oper to aeeonnnedate the hatte il? on Whieh the tnnihlers 28 and Q are sop ported. The tinnliilere and are arA riinged in :sesg there being' provided one eet ol tuinhlers lor eaeh slidingr dog so that it ir; neeegieeriY to more the slidingdoge into registry with inorahle tinnhlere o'i the bete, to permit trie carriages to more and aecomplieh the riiorenient ot the Shilling; holt Btl.

The tnnihlers 29 are etationari,v eo that ahoiild the doeii aseoeiated therewith he inoved to positions in the paths et tra'tel ot the stationarj,v tiiinhlere. the nio\.'tfinei1t of the carriages to operate the liiolt 30g would be prevented.

Coiled springe 3l have connection with the pivoted tiinihlere :Z8 for inoringg the time lilerii to their normal positions zitter the look ingr earriag'e hats niored to release the teinolers whieh have heen previously aetiiate-d. The tnnihler loeliine earriaffe provided rith tnnihler eng.' Vlingr hars 2K2 that are disposed ai, ohlitpie :ingles with respect to the side liars Alti and arranged with reepeet 'to the tiiinlilere so that. the hare will more 253 oli the tiinihlere that are shown as extending.' forwardly therefrom to hold the tninhlere; whieh have heen inored to their inactive positions", airainsit moreinent teiiiporarilj; to their active poeitione.

The lovcen ende o't' the tuinhlere lll are 'lornied with notehef'i itl adapted to a reoniinodate the transverse rihe Bti that extend upwardly troni the tnrnhler carriage whereby the tnmhlere Ell are locked airainet pivotal inert-ment on the Shalite supporting; thein.

,lliretalljiY siiigiported at one end ot the ,traine lt and at opposite Sitten thereof are ai i 23'? that have their opper ende oirtendingr into suitable openings ilornied in the. loelii .3 :traine 12h 5.o that when the raiVM lagos ll' and lti are niored tonerdev one end oli the lt eli the Carriage l@ Will eontaet with the lower ende` ol the arma 3T moving the opper ende thereof in rer #rf-ie direet ions. with the reenlt that the teeth of the looking arios .22 more troni engagen'ient `with the teeth ot the doe; eipporting platee i253, releasing' the doos; for tree transverse movement.

loxtending downnerdly frein the tnillbler 'arriage 'lS is a pin all which ie engaged by the 'forked end 4:2 oit the hell eranl; lever 1t-,I3 that ie pirotalltv supported by the plate ot the look taine.

The opposite arin ol the. heil e fanlt lever which is indicated at it has connection with the sliding holt Il() as :it Lt-5 so that when the Carriage 1S is moved longitiidinallyoit the plates, the holt 30 is moved laterally troni the loel: 'traine to eanee the saine to enter its keeper or more to its nnloelted position.

A rortieal sha'tft itl is disposed between the plates and (S and earriee` the pinion 1li' at its lower end. the pinion i8 being Carried at its upper end. The pinion 1li" is in ineeh with the teeth ft-9 formed on one of the tlanejes lll ot the tuinhler earriafge i8 so that as the shal' liti rotates. inc nt-n'nent is imparted to he tnniloler carriage i8 to niove the tiinihler Carriage and tninhlere supported therehy. tiopported on the under enrliaee ot the. plate (l a pinion which ie in niefsh nith the pinion 49', the pinion 5() supported by the isha'tt 5l.

This pinion 50 meshes with the pinion 52 nionnted on the Sha'lt 53 that 'i''orinS a enpport 'lor the eontrollii'ig knol) -it. Thus it will he ,eeen that as the pinion 52 operatee. a relative movement is imparted to the pini ion i8 to operate the ttnnhler carriage i8 which as hetero stated, operates the Sliding holt 30.

Supported adjacent to the pinion and secured to the shaft is a disk 55 proride'd with noteliee 56 disposed in the periplie-ry tliereot and arranged in spaced relation with each othe Y' ae elearl;7 :shown hy lie'nro 5i ot the drawii'igfe. Whieh notehea are deaio-ned to reeeive the logis of the spring arms 5S that are pirotaliyY supported at 58 to normali)7 hold the eliarlft 53 against niereinent.

llxtendinir through the plate G are the doo operatingr shafts; of), (it). Gl4 and (i2. Whirl] shafts (it) and sanliport pinions (lf-l a nd Gil respeetively while the hatte 59 and t'l. support dielo; (if) through a elnteh inet-haniein to be hereinafter more fully described. llaeh ot these dielei (S5 is `Formed with a heartashniied earn lgroote titi. `in Whit-h the pins t5? oi the dof.;` operatinglinlrs4 t'il nuire. when the lieke are rotated.

ldaeh ot the elnteh ineinhiatre employed tor eonnt'ietinir the dog eoiitrolli-.ijgr liiriolie to the diel: :.eeoeiatet'l therewithfinelrides a oirrnlar nieinher Htl 'lforinefl with a threaded exteneion TO titted in a th 'ended openingY in the lnoh associated therewith ae elearljif' shown hy Figure Sl. a eet :ierew Tl. heine pro vided to vernre the nieniher (Sil airainat inorenient when the knob ie heine` rotated.

Fri 'niinoj a part ot the member t-Sl a lianoje i?? that tite onder the plate 'lil and is held in poeition by the plate. Carried by the member `69 is e pvoted pmrl Tit formed liti lll-3 Disposed under the member G9 is a disk 8Or` formedY with a plurality of teeth 8l that cooperate with teeth of the-disk member 82 to which t-he disk members G5 are secured,` the shaftl on which the disk is supported.v being threaded at 82A to move in suitable threaded openinofi of the disks 'associated therewith..y Thus .Y willbeseenvthat due to this construction, the disks may beadjustedwith respeottoV theV disks 8O associated therewith to change the combination 'of the lock and the relation oit the disksl with respect to eachf other. Y

lCarried by each oi' the disks SO is a lug` that is adapted to cooperate with t-he pivoted pawl Tl associated therewith so that when the pivoted pawl is rotatediin the direction of the arrow as shown by Figure 7 of the drawing, the combination between the knobs and` disks 65 will' be made, to the end that the knobs may be continuously rotated without affecting the rotations ot' the disks. Upon movement of theknobs in the opposite direction, it will be seenthat the pawls will move outwardly, due to their movements over the cam. surfaces-of the ring` members 77, and due to the fact that the lugs 83 lie within. the paths ot travel of the pawls 'Z4 thedisks willfbe picked up and carried'v with the pawls, resultingin a relative movement ot' the dog actuating links G8. n v Y Pinions 63. and= 6lalso operate in conjunction: with clutch mechanisms as described for'operating;v the disksy 8st vthat carry gears that are connected to the circular members 69 thereof, whereby a. rotary movement of the knobs` rotating,` the pinions 63 and` (3f-l may be permitted in one direction without at'ectin-g` the movement off the disk 84 carrying the cam groove associated therewith, while upon movement oi the pinions in the opposite direct-ions, the disks S4 will'be rotatedL to operate the rdenF actuating links associated therewith. n

The dog operating links 68 are pivotally .supported at S5 and have arms 86 pivotally connected at their free ends., which arms have pivotal connection with the dog supporting plates 25 so that movement of the links 68 results in a movement of the plates transversely of the lock frame.

Meshing with the pinion 52 of the controlling knob shaft, is a pinion S7 that meshes with a pinion 8.8 carried on the upper end1 of the sha-tt S9 which sha-tt 89 supports the pinion 90 at its lower end, which pinion' isV formed with an elongated opening 91 that accommodates the( pin 92, carried by" a disk 99 supported directly under thepinion 90 andl which is secured to the shaft S9- soA thatthedisk will be permitted toY move until the pin contacts with.

one wall of the elongatedv opening, where upon the disk picks upV the pinion to rotate" permitted` by. the connection between the disk 90v and Vpin-ion- 90 as described. In order that the trict-ional contact between the disk 99 and pinionV 90 will not cause a movement ot the pinion 9G, disk 93 is secured to the pinion. 90 onthe upper surface thereof, which diskk 93 is tormedfwith notched portions 94' that are engaged by the lugs 95 ot the spring' armsY 9G pivotally connected to the lock frame Vat 97. Thus it willy be seen that due to this construction, in order to move the pinion 90,.it will benecessary to overcome thetensionottl the arms 96 to cause the lugs 95 to move from the notched portions.

Each dog` controlling knobis provided with graduations 98 which arev adapted to line up'with a suitable marking` provided on the plate supported under the knob, the plate 994 supported thereabove, being supplied' with openings to receive the knobs.

In the operation ot the device, the dog operating knobs are operated tobring the dogs topredetermined' positions in` the paths ot travel of certain pivote/.d tumblers, whereupon. the controlling knob is operated to move the .tumbler carriageV longitudinally of the lock trame to slidethe bo t to its active position.

After the'bolt has beenY moved toits active position, the dog operatingknobs may be moved to move the dogs from their positions adjacent' to the tumblers which have been actuated'. Ijt'is obvious thatv when the dogs have' been movedan'd' have assumed a position on the opposite sides ot the tumblers, the loeking` Vcarriage moves to lock 'these tumblers in their inactive positions.

In order to move the sliding bolt to its inactive-position, it is necessary to rotate the dog actuating knobs to move the dogs to positions aligning with the tumblerswhich have been moved to their inactive positions, whereupon the controlling knob may be operatel to slide the tumbler carriage to its initial position with the result that the sliding bolt moves within the look frame.

l claim:-

l. In a look construction, a frame, a tumbler carriage mounted for sliding movement within the trame, transversely movable dogs mounted within the frame and adapted to move in the paths of travel of the tumblers, a link for operating e: eh dog, disks having hearbshaped grooves, said links having pins` adapted to move in the grooves for transniitling movement of the disks to the links, means `tor operatiiig the disks, and a slid ing bolt operated by the movement ol the tumbler ea rria ge.

ln a look Construction, a frame, a tumbler carriage mounted Within the frame, and adapted to be moved longitudinally thereof, sets oli. tumblers on the tumbler carriage, transversely movable dogs mounted on the trame and adapted to be moved in the paths ot Atravel oit the tuniblers, disks supported by the traina?,-` said disks` having grooves, link membershaving pins mo *able in the grooves, means ilor eoxmeeting the link members and dogs, and a sliding bolt operated b v the movement: ot the tumbler carriage.

l. In a look Construction, a iframe, a tumbler carriage mounted for sliding movement within the trame, tnmblers on the tumbler Carriage, dogs movable transversely oi. the frame and adapted to be moved to positions in the paths of travel of the tnniblers to allorv movement oi the tumbler carriage, disks having grooves ol irregular i'm'iuation, link members having pins movable in the grooves and having connection with the dogs to move the dogs, and a sliding bolt movable vvith the tumbler earriage.

ln a leek construction, a frame, a tumbler rarriage movable Within the frame, dogs adapted to move to positions adjacent to the tumbler carriage, disks having grooves. link members connecting the dogs and disks, said link members having pins movable in the grooves, Controlling knobs ior moving the disks, and means for elutehing the controlling knobs to the disks.

ln a lock eonstruetion, a frame, a troubler carriage movable longitudinally of the iframe, dogs eoolierating with the tumbler Carriage to permit. of movement o'lf he tumbler carriage, disks supported by the trame, means tor connecting the dogs and disks to cause the dogs to move when the disks are rotated, operating knobs for the disks, and means vfor connecting the knobs and disks to permit oii movement ot the knobs in one direct-ion independently oli' the disks.

(l. ln a look construction, a traine, a sliding tumbler carriage mounted Within the iframe, dogs for controlling the movements ol the tumbler ^arriago, disks supported by the frame, means for eonneeting the disks and dogs to transmit movement oit the disks to the dogs, a pair of disks mounted on eaeh olf the lirst mentioned disks, a lug carried bv one et the latter disks, a ring .member loosely mounted above the disks and having an extension, an operating knob For eaehA of the first mentioned disks, a pivoted paul earried b v eaeh knob and adapted to eooperate with the extension and lug to eluteh the knobs and disks together for moving the link members.

i'. ln a loek eonstruelion, a Frame, a sliding tumbler Carriage mounted within the.

iframe, tumblers earried by the tumbler carriage, movable dogs associated with the tumblers and adapted. to move in the paths oil? the tumblers to restrict n'iovement o'' the tumbler Carriage, link members, means for eonneeting the link members and dogs, disks assoeiated with the link members to operate the link members, operating knobs associated with the disks, one of said disks having an upwardly extended lug, a rotatable ring member surrounding the lug, and

means Carried between the ring member and lug and operated by movement oit' the knob associated therewith for eonneeting1 the knob and disks, and said means adapted to release the disks -when the mob associated therewith is moved in one direetion.

8. ln a loek construction, a sliding earriage, tuniblers mounted on the sliding ear riage and adapted to aetuate a sliding bolt, a Controlling knob for moving the sliding Carriage, a di-sk rotatable vvith the control# ling knob and having ont out portions, spring arms having lugs adapted to move into the eut out portions to normally restriet moven'ient olf the controlling knob and means for looking the tumbler carriage against movement.

ln testimony that l. claim the Vforegoing as my own, l. have hereto allixed my signature. 

